Hill Runner

Ah, just seen this on the forum:

Hi All Thanks for your kind words and great to hear from you all. It was -5 on Wednesday morning, felt sorry for the campers in tents at the foot of the pass! Simplysimon is spot on, Wanlockhead, Southern Uplands (also highest pub in Scotland, not as high as the wonderful Tan Hill Inn though in England). Anyway I digress. Advise sought and perhaps I will post on one of the more generic forums? Is that where I should be going really? So there I was with this horrible PIR board between the joists, and after so much prevarication I'm also thinking of putting it on the interior wall that that faces outside at the front of the house. But here is the crux, I have no idea whether I can just attch it do the present plaster (looks like lath and plaster? I have a horrible feeling that you experts will tell me to get rid of the plaster and use lime somehow, but really not sure what I'm doing here. The PIR is 12cm, quite happy losing that space to make this bally house warmer. Photos with work still in progress between joists (yes, I realise now that I should have done this bit last d'oh!). Oh going to move the sockets away from that wall as well.

Hi All Have a small cottage (at about 1400 feet above sea level in Scotland) and in process of insulating underfloors and internals walls. So much prevarication, so much faffing, so much finding reasons to go out running/cycling/swimming instead of getting my 5h1t together. Have been speaking with a retrofit expert who quite rightly suggested I go on this forum for collective replies rather than relying on his charity! So there may be questions coming up very soon, and thanks in advance for your help and acceptance. Hill Runner